


GROCO 4" Bronze High Speed Thru-Hull Fitting w/Nut - HSTH-4000-W
Marsoni
M251S
Get it in 3 business days with 1 day shipping.
Friday, May 29
GROCO 4" Bronze High Speed Thru-Hull Fitting w/Nut - HSTH-4000-WGROCO 4" Bronze High Speed Thru Hull Fitting w Nut HSTH 4000 W 4" Bronze High Speed Thru Hull Fitting w Nut Features: Designed for increased flow compared to standard Thru Hulls and with less drag NPSM NPT combination thread C83600 Bronze
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- We offer a 30-day return/exchange service after receiving.
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4.6 ★★★★★
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Product Reviews
★★★★★ 4
Does not stay cool
I bought this for my bunny and the material itself does feel cool at first. My bunny wast laying on it for about 30- 40 minutes and it feels warm to the touch. So while it does feel cool initially, if your pet is warm the pad will get warm as well. I'd recommend leaving the fan on for your pet in addition to the pad or placing a frozen water bottle on the pad so it keeps the pad cool a little longer.
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Reviewed in the United States on June 7, 2025
★★★★★ 5
Cool mats for cool cats
Color: Green Leaf, Size: Small (20'' X 16'' X 0.3''), Number of Items: 1, Color: Green Leaf, Size: Small (20'' X 16'' X 0.3''), Number of Items: 1
Well received product for upcoming warm weather for an older indoor cat, highly recommend!
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Reviewed in the United States on May 22, 2026
★★★★★ 5
It works! Kitty loves it.
Color: Pink Cat, Size: Medium (27'' X 20'' X 0.3''), Number of Items: 1
My cat loves this. It really does keep her cool. I even washed it in the washing machine and put it outside to dry - still cool to the touch.
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Reviewed in the United States on May 17, 2026
★★★★★ 5
Best cooling purchase for my indoor cat
Color: Green Leaf, Size: Small (20'' X 16'' X 0.3''), Number of Items: 1
I have a Maine coon and he runs very hot. I don’t have much tile in my house so I bought him this, and added it to his bed. He hasn’t left his bed since I put it in there a few hours ago. He would never be in his bed longer than 20 minutes, let alone lay in it all the way. Such a successful buy for what we needed.
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Reviewed in the United States on April 26, 2026
★★★★★ 5
So soft
Ridiculously soft and high quality! I want to sleep on it. Very inexpensive for what I got
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Reviewed in the United States on May 16, 2026